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update photosensitive epiliespy assessment links.

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Craig Oates 3 years ago
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  1. 34
      health-and-safety/photosensitive_epilepsy.md

34
health-and-safety/photosensitive_epilepsy.md
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@ -21,7 +21,7 @@ The two main reasons why the artworks don't produce a high enough
flicker/flash rate are as follows: flicker/flash rate are as follows:
1. The devices controlling the lights in the gallery cannot receive 1. The devices controlling the lights in the gallery cannot receive
enough new readings-per-second to reach the Hertz required to cause enough new readings-per-second to reach the hertz required to cause
a seizure (according the reference sources below); And, a seizure (according the reference sources below); And,
2. The welders in the factory do not alter the light levels (in their 2. The welders in the factory do not alter the light levels (in their
welding booths) at a high enough rate to trigger a seizure. welding booths) at a high enough rate to trigger a seizure.
@ -31,8 +31,8 @@ reason why is because I can refer you to the link below to address the
first point: first point:
- -
[Relay](https://git.abbether.net/return-to-ritherdon/relay/src/branch/unstable/relay.py#L51)(the [Relay](https://git.abbether.net/return-to-ritherdon/relay/src/branch/unstable/relay.py#L51)
software controlling the lights in the gallery) (the software controlling the lights in the gallery)
The highlighted line (on the linked page) indicates the gallery lights The highlighted line (on the linked page) indicates the gallery lights
must wait 0.3 seconds until it receives the latest light reading must wait 0.3 seconds until it receives the latest light reading
@ -44,16 +44,18 @@ To expand on the second point, I have analysed and reviewed a
days-worth of **live test** data, collected on the days-worth of **live test** data, collected on the
**23/04/2021**. *Personal Flash in Real Time (Ross)* (the light meter **23/04/2021**. *Personal Flash in Real Time (Ross)* (the light meter
part of the artwork) took the light readings from **06:57 to 16:00** part of the artwork) took the light readings from **06:57 to 16:00**
(approx. 9 hours). Also, the test was conducted in the intended (approx. 9 hours). Also, the test was conducted under the intended
environment and under real-world conditions. environment and under real-world conditions.
The overall assessment of the data is the light meter took readings at The overall assessment of the data is the light meter took readings at
a rate of four readings-per-second for approximately two a rate of four readings-per-second for approximately two
(non-consecutive) hours. Within that time, the light meter *produced (non-consecutive) hours. Within that time, the light meter produced
readings* which could trigger a flash rate of two hertz, at most, if *readings* which generated a flash rate of two hertz, at most. And, it
the gallery light wasn't already limited to three reached this 'peak' for a total of three non-consecutive seconds
readings-per-second. And, it reached this 'peak' for a total of three throughout the nine hours. With the light meter demonstrating it has
non-consecutive seconds throughout the nine hours. *the potential* to generate enough new readings-per-second, the
gallery lights have a hard limit of three readings-per-second encoded
into their systems (via their software).
## Information About Photosensitive Epilepsy ## Information About Photosensitive Epilepsy
@ -66,7 +68,7 @@ trigger seizures but this varies from person to person. While some
people are sensitive at frequencies up to 60 hertz, sensitivity under people are sensitive at frequencies up to 60 hertz, sensitivity under
3 hertz is not common. 3 hertz is not common.
More information can be found at: More information available at:
- [Epilepsy Society](https://epilepsysociety.org.uk/) (home page) - [Epilepsy Society](https://epilepsysociety.org.uk/) (home page)
- [Epilepsy - [Epilepsy
@ -180,7 +182,7 @@ are available if needed.
If you would like to see the data in situ, click on the following: If you would like to see the data in situ, click on the following:
- [test-data-lite.csv](https://git.abbether.net/return-to-ritherdon/rtr-docs/src/branch/unstable/health-and-safety/data/test-data-lite.csv) - [test-data-lite.csv](data/test-data-lite.csv)
The data consists of three columns: The data consists of three columns:
@ -252,7 +254,7 @@ document.
## Breakdown of Data Analysis ## Breakdown of Data Analysis
Within the [data](/data) directory, the [results](/data/results) Within the [data](data) directory, the [results](data/results)
directory contains four files. These files are the result of the data directory contains four files. These files are the result of the data
analysis. analysis.
@ -274,7 +276,7 @@ assessment. And, each file will have its own subsection below.
### readings-per-sec.csv ### readings-per-sec.csv
- [readings-per-sec.csv](/data/results/readings-per-sec.csv) - [readings-per-sec.csv](data/results/readings-per-sec.csv)
Overall, the test data recorded **84,294** readings over the course of Overall, the test data recorded **84,294** readings over the course of
about nine hours. With that said, the readings-per-second rates about nine hours. With that said, the readings-per-second rates
@ -360,7 +362,7 @@ recordings and not all of it.
### readings_above_threshold.csv ### readings_above_threshold.csv
- [readings_above_threshold.csv](/data/results/readings_above_threshold.csv) - [readings_above_threshold.csv](data/results/readings_above_threshold.csv)
To review the time periods were the light meter was recording above To review the time periods were the light meter was recording above
three hertz, I needed to know there timestamps. This file is a list of three hertz, I needed to know there timestamps. This file is a list of
@ -372,7 +374,7 @@ file is an artefact of the filtering process and needed to generate
### flicker_list.csv ### flicker_list.csv
- [flicker_list.csv](/data/results/flicker_list.csv) - [flicker_list.csv](data/results/flicker_list.csv)
This file lists all the moments the light meter recorded at four This file lists all the moments the light meter recorded at four
readings-per-second and the light levels at those times. I should note readings-per-second and the light levels at those times. I should note
@ -422,7 +424,7 @@ system flash rate was one hertz for that second.
### filtered_flicker_entries.csv ### filtered_flicker_entries.csv
- [flicker_entries.csv](/data/results/flicker_entries.csv) - [flicker_entries.csv](data/results/flicker_entries.csv)
The data in this file filters the data in `flicker_list.csv` down to The data in this file filters the data in `flicker_list.csv` down to
eight time periods. These are the times the light recorded at four eight time periods. These are the times the light recorded at four